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                    <i class="far fa-calendar-minus fa-fw"></i>发布日期:&nbsp;&nbsp;
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                <p>在日常开发中一定会遇到，spark将计算好的数据load到es中，供后端同学查询使用。下面介绍一下spark写es的方式。 使用scala进行演示，对应的java自己google了。</p>
<p>spark写es需要使用到 对应的包es包。maven配置如下</p>
<h2 id="MAVEN配置"><a href="#MAVEN配置" class="headerlink" title="MAVEN配置"></a>MAVEN配置</h2><pre class="line-numbers language-maven" data-language="maven"><code class="language-maven">&lt;dependency&gt;
    &lt;groupId&gt;org.apache.spark&lt;/groupId&gt;
    &lt;artifactId&gt;spark-core_2.12&lt;/artifactId&gt;
    &lt;version&gt;3.0.0&lt;/version&gt;
&lt;/dependency&gt;

&lt;dependency&gt;
    &lt;groupId&gt;org.elasticsearch&lt;/groupId&gt;
    &lt;artifactId&gt;elasticsearch-hadoop&lt;/artifactId&gt;
    &lt;version&gt;7.0.0&lt;/version&gt;
&lt;/dependency&gt;<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>


<h3 id="使用MAP方式"><a href="#使用MAP方式" class="headerlink" title="使用MAP方式"></a>使用MAP方式</h3><p>代码如下</p>
<pre class="line-numbers language-sql" data-language="sql"><code class="language-sql">package org<span class="token punctuation">.</span>bigdata<span class="token punctuation">.</span>es

<span class="token keyword">import</span> org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span>{SparkConf<span class="token punctuation">,</span> SparkContext}
<span class="token keyword">import</span> org<span class="token punctuation">.</span>elasticsearch<span class="token punctuation">.</span>spark<span class="token punctuation">.</span>_

object D01 {
  def main<span class="token punctuation">(</span>args: Array<span class="token punctuation">[</span>String<span class="token punctuation">]</span><span class="token punctuation">)</span>: Unit <span class="token operator">=</span> {
    val conf: SparkConf <span class="token operator">=</span> new SparkConf<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setAppName<span class="token punctuation">(</span><span class="token string">"d01"</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setMaster<span class="token punctuation">(</span><span class="token string">"local[*]"</span><span class="token punctuation">)</span>
    conf<span class="token punctuation">.</span><span class="token keyword">set</span><span class="token punctuation">(</span><span class="token string">"es.index.auto.create"</span><span class="token punctuation">,</span> <span class="token string">"true"</span><span class="token punctuation">)</span>

    val sc: SparkContext <span class="token operator">=</span> new SparkContext<span class="token punctuation">(</span>conf<span class="token punctuation">)</span>

    <span class="token comment">// map方式</span>
    val numbers <span class="token operator">=</span> Map<span class="token punctuation">(</span><span class="token string">"one"</span> <span class="token operator">-</span><span class="token operator">&gt;</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token string">"two"</span> <span class="token operator">-</span><span class="token operator">&gt;</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token string">"three"</span> <span class="token operator">-</span><span class="token operator">&gt;</span> <span class="token number">3</span><span class="token punctuation">)</span>
    val airports <span class="token operator">=</span> Map<span class="token punctuation">(</span><span class="token string">"arrival"</span> <span class="token operator">-</span><span class="token operator">&gt;</span> <span class="token string">"Otopeni"</span><span class="token punctuation">,</span> <span class="token string">"SFO"</span> <span class="token operator">-</span><span class="token operator">&gt;</span> <span class="token string">"San Fran"</span><span class="token punctuation">)</span>
    sc<span class="token punctuation">.</span>makeRDD<span class="token punctuation">(</span>Seq<span class="token punctuation">(</span>numbers<span class="token punctuation">,</span> airports<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span>saveToEs<span class="token punctuation">(</span><span class="token string">"spark/docs"</span><span class="token punctuation">)</span>

  }
}<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>注意： 必须要导入 <strong>import org.elasticsearch.spark._</strong>, 不然，就没有 <code>saveToEs</code>方法了</p>
<p>下面介绍一下， org.elasticsearch.spark._ 导入的隐式函数</p>
<p><img src="https://raw.githubusercontent.com/jacksonyoudi/images/main/uPic/uJdnvn.jpg" alt="包对象中隐式函数"></p>
<p>在 org.elasticsearch.spark._  下面的包对象中有 一个隐式函数，将 RDD转成 SparkRDDFunctions</p>
<h3 id="反编译成-java代码"><a href="#反编译成-java代码" class="headerlink" title="反编译成 java代码"></a>反编译成 java代码</h3> <pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">package</span> <span class="token namespace">org<span class="token punctuation">.</span>bigdata<span class="token punctuation">.</span>es</span><span class="token punctuation">;</span>

<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span><span class="token class-name">SparkConf</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span><span class="token class-name">SparkContext</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span><span class="token class-name">Seq</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span>immutable<span class="token punctuation">.</span></span><span class="token class-name">Map</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>runtime<span class="token punctuation">.</span></span><span class="token class-name">BoxesRunTime</span><span class="token punctuation">;</span>

<span class="token keyword">public</span> <span class="token keyword">final</span> <span class="token keyword">class</span> D01$ <span class="token punctuation">{</span>
  <span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">final</span> D01$ MODULE$<span class="token punctuation">;</span>
  
  <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">SparkConf</span> conf <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">SparkConf</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">setAppName</span><span class="token punctuation">(</span><span class="token string">"d01"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">setMaster</span><span class="token punctuation">(</span><span class="token string">"local[*]"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    conf<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"es.index.auto.create"</span><span class="token punctuation">,</span> <span class="token string">"true"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">SparkContext</span> sc <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">SparkContext</span><span class="token punctuation">(</span>conf<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token class-name">ArrowAssoc</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span>$minus$greater$<span class="token function">extension</span><span class="token punctuation">(</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">ArrowAssoc</span><span class="token punctuation">(</span><span class="token string">"one"</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name">BoxesRunTime</span><span class="token punctuation">.</span><span class="token function">boxToInteger</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token class-name">ArrowAssoc</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span>$minus$greater$<span class="token function">extension</span><span class="token punctuation">(</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">ArrowAssoc</span><span class="token punctuation">(</span><span class="token string">"two"</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name">BoxesRunTime</span><span class="token punctuation">.</span><span class="token function">boxToInteger</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token class-name">ArrowAssoc</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span>$minus$greater$<span class="token function">extension</span><span class="token punctuation">(</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">ArrowAssoc</span><span class="token punctuation">(</span><span class="token string">"three"</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name">BoxesRunTime</span><span class="token punctuation">.</span><span class="token function">boxToInteger</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">Map</span> numbers <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">Map</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">Map</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">apply</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Seq</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">wrapRefArray</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token class-name">ArrowAssoc</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span>$minus$greater$<span class="token function">extension</span><span class="token punctuation">(</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">ArrowAssoc</span><span class="token punctuation">(</span><span class="token string">"arrival"</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string">"Otopeni"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token class-name">ArrowAssoc</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span>$minus$greater$<span class="token function">extension</span><span class="token punctuation">(</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">ArrowAssoc</span><span class="token punctuation">(</span><span class="token string">"SFO"</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string">"San Fran"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">Map</span> airports <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">Map</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">Map</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">apply</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Seq</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">wrapRefArray</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token keyword">new</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Tuple2</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Map</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> numbers<span class="token punctuation">;</span>
    <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Map</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">=</span> airports<span class="token punctuation">;</span>
    org<span class="token punctuation">.</span>elasticsearch<span class="token punctuation">.</span>spark<span class="token punctuation">.</span><span class="token keyword">package</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">sparkRDDFunctions</span><span class="token punctuation">(</span>sc<span class="token punctuation">.</span><span class="token function">makeRDD</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Seq</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span>Seq</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">apply</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Seq</span><span class="token punctuation">)</span><span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span></span>Predef</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">wrapRefArray</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token keyword">new</span> <span class="token class-name">Map</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span> sc<span class="token punctuation">.</span>makeRDD$<span class="token keyword">default</span>$<span class="token function">2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span>reflect<span class="token punctuation">.</span></span>ClassTag</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">apply</span><span class="token punctuation">(</span><span class="token class-name">Map</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name"><span class="token namespace">scala<span class="token punctuation">.</span>reflect<span class="token punctuation">.</span></span>ClassTag</span>$<span class="token punctuation">.</span>MODULE$<span class="token punctuation">.</span><span class="token function">apply</span><span class="token punctuation">(</span><span class="token class-name">Map</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">saveToEs</span><span class="token punctuation">(</span><span class="token string">"spark/docs"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
  
  <span class="token keyword">private</span> D01$<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    MODULE$ <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>



<p>再给一下，其他的 写es的代码</p>
<h2 id="其他方式写ES"><a href="#其他方式写ES" class="headerlink" title="其他方式写ES"></a>其他方式写ES</h2><h3 id="使用样例类方式"><a href="#使用样例类方式" class="headerlink" title="使用样例类方式"></a>使用样例类方式</h3><pre class="line-numbers language-scala" data-language="scala"><code class="language-scala">
<span class="token keyword">package</span> <span class="token namespace">org<span class="token punctuation">.</span>bigdata<span class="token punctuation">.</span>es</span>

<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span>rdd<span class="token punctuation">.</span></span>RDD
<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span><span class="token punctuation">{</span>SparkConf<span class="token punctuation">,</span> SparkContext<span class="token punctuation">}</span>
<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>elasticsearch<span class="token punctuation">.</span>spark<span class="token punctuation">.</span>rdd<span class="token punctuation">.</span></span>EsSpark

<span class="token keyword">object</span> D02 <span class="token punctuation">{</span>
  <span class="token keyword">def</span> main<span class="token punctuation">(</span>args<span class="token operator">:</span> Array<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">Unit</span> <span class="token operator">=</span> <span class="token punctuation">{</span>
    <span class="token keyword">val</span> conf<span class="token operator">:</span> SparkConf <span class="token operator">=</span> <span class="token keyword">new</span> SparkConf<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setAppName<span class="token punctuation">(</span><span class="token string">"d01"</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setMaster<span class="token punctuation">(</span><span class="token string">"local[*]"</span><span class="token punctuation">)</span>
    conf<span class="token punctuation">.</span>set<span class="token punctuation">(</span><span class="token string">"es.index.auto.create"</span><span class="token punctuation">,</span> <span class="token string">"true"</span><span class="token punctuation">)</span>

    <span class="token keyword">val</span> sc<span class="token operator">:</span> SparkContext <span class="token operator">=</span> <span class="token keyword">new</span> SparkContext<span class="token punctuation">(</span>conf<span class="token punctuation">)</span>
    <span class="token keyword">val</span> upcomingTrip<span class="token operator">:</span> Trip <span class="token operator">=</span> Trip<span class="token punctuation">(</span><span class="token string">"OTP"</span><span class="token punctuation">,</span> <span class="token string">"SFO"</span><span class="token punctuation">)</span>
    <span class="token keyword">val</span> lastWeekTrip<span class="token operator">:</span> Trip <span class="token operator">=</span> Trip<span class="token punctuation">(</span><span class="token string">"MUC"</span><span class="token punctuation">,</span> <span class="token string">"OTP"</span><span class="token punctuation">)</span>

    <span class="token keyword">val</span> rdd<span class="token operator">:</span> RDD<span class="token punctuation">[</span>Trip<span class="token punctuation">]</span> <span class="token operator">=</span> sc<span class="token punctuation">.</span>makeRDD<span class="token punctuation">(</span>Seq<span class="token punctuation">(</span>upcomingTrip<span class="token punctuation">,</span> lastWeekTrip<span class="token punctuation">)</span><span class="token punctuation">)</span>
    EsSpark<span class="token punctuation">.</span>saveToEs<span class="token punctuation">(</span>rdd<span class="token punctuation">,</span> <span class="token string">"spark/docs"</span><span class="token punctuation">,</span> Map<span class="token punctuation">(</span><span class="token string">"es.mapping.id"</span> <span class="token operator">-&gt;</span> <span class="token string">"id"</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>


<span class="token comment">// define a case class</span>
<span class="token keyword">case</span> <span class="token keyword">class</span> Trip<span class="token punctuation">(</span>departure<span class="token operator">:</span> <span class="token builtin">String</span><span class="token punctuation">,</span> arrival<span class="token operator">:</span> <span class="token builtin">String</span><span class="token punctuation">)</span>
<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>



<h3 id="使用字符串json方式"><a href="#使用字符串json方式" class="headerlink" title="使用字符串json方式"></a>使用字符串json方式</h3><pre class="line-numbers language-scala" data-language="scala"><code class="language-scala"><span class="token keyword">package</span> <span class="token namespace">org<span class="token punctuation">.</span>bigdata<span class="token punctuation">.</span>es</span>

<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span><span class="token punctuation">{</span>SparkConf<span class="token punctuation">,</span> SparkContext<span class="token punctuation">}</span>
<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>elasticsearch<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span>_


<span class="token keyword">object</span> D03 <span class="token punctuation">{</span>
  <span class="token keyword">def</span> main<span class="token punctuation">(</span>args<span class="token operator">:</span> Array<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">Unit</span> <span class="token operator">=</span> <span class="token punctuation">{</span>
    <span class="token keyword">val</span> conf<span class="token operator">:</span> SparkConf <span class="token operator">=</span> <span class="token keyword">new</span> SparkConf<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setAppName<span class="token punctuation">(</span><span class="token string">"d01"</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setMaster<span class="token punctuation">(</span><span class="token string">"local[*]"</span><span class="token punctuation">)</span>
    conf<span class="token punctuation">.</span>set<span class="token punctuation">(</span><span class="token string">"es.index.auto.create"</span><span class="token punctuation">,</span> <span class="token string">"true"</span><span class="token punctuation">)</span>

    <span class="token keyword">val</span> sc<span class="token operator">:</span> SparkContext <span class="token operator">=</span> <span class="token keyword">new</span> SparkContext<span class="token punctuation">(</span>conf<span class="token punctuation">)</span>

    <span class="token keyword">val</span> json1 <span class="token operator">=</span> <span class="token triple-quoted-string string">"""{"reason" : "business", "airport" : "SFO"}"""</span>
    <span class="token keyword">val</span> json2 <span class="token operator">=</span> <span class="token triple-quoted-string string">"""{"participants" : 5, "airport" : "OTP"}"""</span>
    sc<span class="token punctuation">.</span>makeRDD<span class="token punctuation">(</span>Seq<span class="token punctuation">(</span>json1<span class="token punctuation">,</span> json2<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span>saveToEs<span class="token punctuation">(</span><span class="token string">"spark/json-trips"</span><span class="token punctuation">)</span>

  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>



<h3 id="动态index"><a href="#动态index" class="headerlink" title="动态index"></a>动态index</h3><pre class="line-numbers language-scala" data-language="scala"><code class="language-scala"><span class="token keyword">package</span> <span class="token namespace">org<span class="token punctuation">.</span>bigdata<span class="token punctuation">.</span>es</span>

<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span><span class="token punctuation">{</span>SparkConf<span class="token punctuation">,</span> SparkContext<span class="token punctuation">}</span>
<span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>elasticsearch<span class="token punctuation">.</span>spark<span class="token punctuation">.</span></span>_

<span class="token keyword">object</span> D04 <span class="token punctuation">{</span>
  <span class="token keyword">def</span> main<span class="token punctuation">(</span>args<span class="token operator">:</span> Array<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">Unit</span> <span class="token operator">=</span> <span class="token punctuation">{</span>
    <span class="token keyword">val</span> conf<span class="token operator">:</span> SparkConf <span class="token operator">=</span> <span class="token keyword">new</span> SparkConf<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setAppName<span class="token punctuation">(</span><span class="token string">"d01"</span><span class="token punctuation">)</span><span class="token punctuation">.</span>setMaster<span class="token punctuation">(</span><span class="token string">"local[*]"</span><span class="token punctuation">)</span>
    conf<span class="token punctuation">.</span>set<span class="token punctuation">(</span><span class="token string">"es.index.auto.create"</span><span class="token punctuation">,</span> <span class="token string">"true"</span><span class="token punctuation">)</span>

    <span class="token keyword">val</span> sc<span class="token operator">:</span> SparkContext <span class="token operator">=</span> <span class="token keyword">new</span> SparkContext<span class="token punctuation">(</span>conf<span class="token punctuation">)</span>

    <span class="token keyword">val</span> game <span class="token operator">=</span> Map<span class="token punctuation">(</span>
      <span class="token string">"media_type"</span> <span class="token operator">-&gt;</span> <span class="token string">"game"</span><span class="token punctuation">,</span>
      <span class="token string">"title"</span> <span class="token operator">-&gt;</span> <span class="token string">"FF VI"</span><span class="token punctuation">,</span>
      <span class="token string">"year"</span> <span class="token operator">-&gt;</span> <span class="token string">"1994"</span><span class="token punctuation">)</span>

    <span class="token keyword">val</span> book <span class="token operator">=</span> Map<span class="token punctuation">(</span><span class="token string">"media_type"</span> <span class="token operator">-&gt;</span> <span class="token string">"book"</span><span class="token punctuation">,</span> <span class="token string">"title"</span> <span class="token operator">-&gt;</span> <span class="token string">"Harry Potter"</span><span class="token punctuation">,</span> <span class="token string">"year"</span> <span class="token operator">-&gt;</span> <span class="token string">"2010"</span><span class="token punctuation">)</span>
    <span class="token keyword">val</span> cd <span class="token operator">=</span> Map<span class="token punctuation">(</span><span class="token string">"media_type"</span> <span class="token operator">-&gt;</span> <span class="token string">"music"</span><span class="token punctuation">,</span> <span class="token string">"title"</span> <span class="token operator">-&gt;</span> <span class="token string">"Surfing With The Alien"</span><span class="token punctuation">)</span>

    sc<span class="token punctuation">.</span>makeRDD<span class="token punctuation">(</span>Seq<span class="token punctuation">(</span>game<span class="token punctuation">,</span> book<span class="token punctuation">,</span> cd<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span>saveToEs<span class="token punctuation">(</span><span class="token string">"my-collection-{media_type}/doc"</span><span class="token punctuation">)</span>

  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
                
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